Loading view. Events Grandma’s Marathon Today Upcoming Upcoming Select date. June 2025 Thu 19 June 19, 2025 – June 21, 2025 Recurring Grandma’s Marathon The 46th annual Grandma’s Marathon is a 26.2-mile race on scenic Highway 61 along the north shore of Lake Superior. It begins just outside of Two Harbors and finishes in Duluth’s Canal Park. The Garry Bjorklund Half Marathon begins at 6:15 a.m. on the edge of Duluth’s city limits and follows the regular marathon course through the heart of Duluth. The full marathon starts at 7:45 a.m. The winner should cross the finish line around 10 a.m. Be sure to check the website for a complete listing of the weekend’s events! Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file